Comprehensive comparison of aroma profiles and chiral free and glycosidically bound volatiles in Fujian and Yunnan white teas

文献类型： 外文期刊

第一作者： Yan, Han

作者： Yan, Han;Li, Wei-Xuan;Zhu, Ying-Lin;Lin, Zhi-Yuan;Chen, Dan;Zhang, Yue;Lv, Hai-Peng;Dai, Wei-Dong;Lin, Zhi;Zhu, Yin;Yan, Han;Dai, De-Jiang;Yan, Han;Zhu, Ying-Lin;Lin, Zhi-Yuan

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关键词： Aroma profiles; Enantiomers; Geographical origins; Glycosidically bound volatiles; White tea

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2024 年 448 卷

页码：

收录情况： SCI

摘要： The Fujian and Yunnan provinces in China are the most representative origins of white tea. However, the key differences in the chemical constituents of the two white teas have rarely been revealed. In this study, a comprehensive comparison of the aroma profiles, chiral volatiles, and glycosidically bound volatiles (GBVs) in Fujian and Yunnan white teas was performed, and 174 volatiles and 28 enantiomers, including 22 volatiles and six GBVs, were identified. Linalool, linalyl-beta-primeveroside (LinPrim), and alpha-terpineol presented the opposite dominant configurations in Fujian and Yunnan white teas, and the chiral GBVs were firstly quantified with significant differences in the contents of R-LinPrim and beta-D-glucopyranosides of (2R, 5R)-linalool oxide A and (2R, 5S)-linalool oxide B. Moreover, discrimination functions for Fujian and Yunnan white teas were created using nine key variables with excellent reliability and efficiency. These results provide a new method for objectively distinguishing authentic white teas according to geographical origin.

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